at Mercure Hotel MOA on 23 Sep 2019 – 27 Sep 2019

at Mercure MOA on 23 Oct 2018 – 26 Oct 2018

at Golden Tulip Berlin on 24 Oct 2017 – 27 Oct 2017

at Golden Tulip on 12 Oct 2015 – 16 Oct 2015

at Rheingoldhalle, Mainz on 8 Oct 2011 – 12 Oct 2011

at Congress Center, Karlsruhe on 15 Nov 2009 – 18 Nov 2009